| 摘要 |
<P>PROBLEM TO BE SOLVED: To control an irradiation area to be always constant where reference light irradiates a hologram recording material even when the incident angle of the reference light changes on recording a hologram by a angle multiplex recording system. <P>SOLUTION: When the angle of a scan mirror 12 is changed to change the incident angle of reference light 200 on a hologram recording material 15, a slit 11 is interlocked to change its angle so that the beam diameter of the reference light 200 is changed by the slit 11 to keep the irradiation area constant without changed on the recording material 15 by the changes in the incident angle of the reference light 200. Thus, on recording a hologram by a angle multiplex recording system, the irradiation area of the hologram recording material 15 to be irradiated with the reference light 200 can be controlled to be always constant even when the incident angle of the reference light 200 changes. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
